—Look! He’s running so fast!
—Hard to__________his legs were once broken.
| A．know | B．imagine | C．realize | D．find |
I was very______ for him because he helped me out of trouble.
| A．grateful | B．calm | C．loose | D．worried |
We should consider the students’ request that the school library_______ more books on popular science.
| A．provide | B．was provided | C．provided | D．should be provided |
--have you ever been to Beijing before?
--No. it is the first time that I ____here.
| A．am | B．be | C．have been | D．had been |
catch the first bus, he got up very early this morning.
| A．In order to | B．In order that | C．So as to | D．So that |
My mother asked me______ enter my room.
| A．whether she could | B．when could she | C．that she can | D．how can she |